/**
 * Created by mingtian on 16-12-10.
 */
var fs = require('fs');
var path = require('path');
var sha1 = require('sha1');
var express = require('express');

var router = express.Router();

var UserModel = require('../models/users');
var checkNotLogin = require('../middlewares/check').checkNotLogin;

router.get('/', checkNotLogin, function (req, res, next) {
    res.render('signup');
});

router.post('/', checkNotLogin, function (req, res, next) {
    var name = req.fields.name;
    var gender = req.fields.gender;
    var bio = req.fields.bio;
    var avatar = req.files.avatar.path.split(path.sep).pop();
    var password = req.fields.password;
    var repassword = req.fields.repassword;

    try {
        if(!( name.length >= 1 && name.length <=10)){
            throw new Error('名字请限制在1-10个字符');
        }
        if (['m', 'f', 'x'].indexOf(gender) === -1) {
            throw new Error('性别只能是 m、f 或 x');
        }
        if (!(bio.length >= 1 && bio.length <= 30)) {
            throw new Error('个人简介请限制在 1-30 个字符');
        }
        if (!req.files.avatar.name) {
            throw new Error('缺少头像');
        }
        if (password.length < 6) {
            throw new Error('密码至少 6 个字符');
        }
        if (password !== repassword) {
            throw new Error('两次输入密码不一致');
        }
    } catch (e){
        req.flash('error', e.message);
        return res.redirect('/signup');
    }

    password = sha1(password);

    var user = {
        name: name,
        gender: gender,
        password: password,
        bio: bio,
        avatar: avatar
    };

    UserModel.create(user).then(function (result) {
        user = result.ops[0];
        delete user.password;
        req.session.user = user;

        req.flash('success', '注册成功');
        res.redirect('/posts');
    }).catch(function (e) {

        fs.unlink(req.files.avatar.path);

        if(e.message.match('E11000 duplicate key')){
            req.flash('error', '用户名已被占用');
            return res.redirect('/signup');
        }
        next(e);
    });
});

module.exports = router;